Chandrayaan-2
E46720
Chandrayaan-2 is India’s second lunar exploration mission, designed to study the Moon’s south polar region with an orbiter, lander, and rover.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Chandrayaan-2 canonical | 21 |
| Chandrayaan-2 Orbiter | 4 |
| Chandrayaan-2 orbiter | 3 |
| Chandrayaan-2 mission | 2 |
| Chandrayaan-2 CLASS | 1 |
| Chandrayaan-2 Large Area Soft X-ray Spectrometer | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T364088 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chandrayaan-2 Context triple: [Indian Space Research Organisation, notableMission, Chandrayaan-2]
-
A.
Chandrayaan-1
Chandrayaan-1 was India’s first lunar probe, launched in 2008, which successfully orbited the Moon and helped confirm the presence of water molecules on the lunar surface.
-
B.
Luna 2
Luna 2 was a Soviet space probe that became the first human-made object to reach the Moon, marking a major milestone in early space exploration.
-
C.
Luna 1
Luna 1 was a Soviet spacecraft launched in 1959 that became the first human-made object to reach the vicinity of the Moon and enter a heliocentric orbit.
-
D.
Polar Satellite Launch Vehicle
The Polar Satellite Launch Vehicle (PSLV) is India’s highly reliable, medium-lift launch vehicle used by ISRO to place satellites into polar, Sun-synchronous, and other orbits, and is known for launching multiple satellites in a single mission.
-
E.
Luna 10
Luna 10 was a Soviet spacecraft that became the first artificial satellite to orbit the Moon, marking a major milestone in early lunar exploration.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Chandrayaan-2 Target entity description: Chandrayaan-2 is India’s second lunar exploration mission, designed to study the Moon’s south polar region with an orbiter, lander, and rover.
-
A.
Chandrayaan-1
Chandrayaan-1 was India’s first lunar probe, launched in 2008, which successfully orbited the Moon and helped confirm the presence of water molecules on the lunar surface.
-
B.
Luna 2
Luna 2 was a Soviet space probe that became the first human-made object to reach the Moon, marking a major milestone in early space exploration.
-
C.
Luna 1
Luna 1 was a Soviet spacecraft launched in 1959 that became the first human-made object to reach the vicinity of the Moon and enter a heliocentric orbit.
-
D.
Polar Satellite Launch Vehicle
The Polar Satellite Launch Vehicle (PSLV) is India’s highly reliable, medium-lift launch vehicle used by ISRO to place satellites into polar, Sun-synchronous, and other orbits, and is known for launching multiple satellites in a single mission.
-
E.
Luna 10
Luna 10 was a Soviet spacecraft that became the first artificial satellite to orbit the Moon, marking a major milestone in early lunar exploration.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Indian Space Research Organisation mission
ⓘ
lunar exploration mission ⓘ space mission ⓘ |
| abbreviation | ISRO mission ⓘ |
| communication | X-band communication with Earth via orbiter ⓘ |
| country | India ⓘ |
| destination | Moon ⓘ |
| enteredLunarOrbitDate | 2019-08-20 ⓘ |
| failureDetail | loss of communication with Vikram lander during final descent ⓘ |
| instrumentsOnLander |
Chandra’s Surface Thermophysical Experiment
ⓘ
Instrument for Lunar Seismic Activity ⓘ Langmuir Probe ⓘ |
| instrumentsOnOrbiter |
Chandrayaan-2
self-linksurface differs
ⓘ
surface form:
Chandrayaan-2 Large Area Soft X-ray Spectrometer
Dual Frequency Synthetic Aperture Radar ⓘ Imaging IR Spectrometer ⓘ Solar X-ray Monitor ⓘ Terrain Mapping Camera 2 ⓘ |
| instrumentsOnRover |
APXS
ⓘ
surface form:
Alpha Particle X-ray Spectrometer
Laser Induced Breakdown Spectroscope ⓘ |
| landerMass | about 1471 kg including rover ⓘ |
| landingAttemptResult | hard landing ⓘ |
| landingSiteAttempt | near lunar south pole ⓘ |
| launchDate | 2019-07-22 ⓘ |
| launchMass | about 3850 kg ⓘ |
| launchSite |
Satish Dhawan Space Centre
ⓘ
Sriharikota ⓘ |
| launchVehicle |
GSLV Mk III / LVM3
ⓘ
surface form:
GSLV Mk III-M1
|
| missionType |
lunar lander
ⓘ
lunar orbiter ⓘ lunar rover ⓘ |
| namedAfter | Sanskrit word Chandrayaan meaning Moon craft ⓘ |
| notableAchievement | placed a working orbiter around the Moon ⓘ |
| objective |
map lunar surface
ⓘ
search for water ice on the Moon ⓘ study lunar exosphere ⓘ study the Moon’s south polar region ⓘ |
| operator | Indian Space Research Organisation ⓘ |
| orbiterMass | about 2379 kg ⓘ |
| orbiterMissionLife |
extended beyond 1 year
ⓘ
planned 1 year ⓘ |
| orbiterStatus | operational as of 2024 ⓘ |
| plannedLandingDate | 2019-09-07 ⓘ |
| powerSource | solar panels ⓘ |
| precededBy | Chandrayaan-1 ⓘ |
| roverMass | about 27 kg ⓘ |
| spacecraftComponents |
lander Vikram
ⓘ
orbiter ⓘ Chandrayaan-3 ⓘ
surface form:
rover Pragyan
|
| successor | Chandrayaan-3 ⓘ |
| targetRegion | lunar south polar region ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Chandrayaan-2 Description of subject: Chandrayaan-2 is India’s second lunar exploration mission, designed to study the Moon’s south polar region with an orbiter, lander, and rover.
Referenced by (32)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Chandrayaan-2 Large Area Soft X-ray Spectrometer
subject surface form:
GSLV Mk III
subject surface form:
Vikram
subject surface form:
Vikram
this entity surface form:
Chandrayaan-2 Orbiter
subject surface form:
Vikram
this entity surface form:
Chandrayaan-2 Orbiter
this entity surface form:
Chandrayaan-2 orbiter
this entity surface form:
Chandrayaan-2 orbiter
this entity surface form:
Chandrayaan-2 orbiter
this entity surface form:
Chandrayaan-2 Orbiter
this entity surface form:
Chandrayaan-2 mission
this entity surface form:
Chandrayaan-2 CLASS
this entity surface form:
Chandrayaan-2 mission
subject surface form:
CE-20
subject surface form:
Chandrayaan-2
this entity surface form:
Chandrayaan-2 Orbiter